Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
Consider the following about Secondary Rainbows that are fainter than a primary rainbow.
1) They appear outside of a primary rainbow.
2) They occur when a light entering a raindrop undergoes no internal reflection.
3) The color scheme or color order of the secondary rainbow is opposite of the primary rainbow.
Select the correct answer using the codes below.
1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
Sound would travel fastest in
Water
Air
Diamond
Iron
In a plane mirror, image is always
At a fixed distance from the plane of the mirror
At the same distance behind the mirror as the object is in front of it
At a distance less than the distance of object from the mirror
At the focal point of the mirror irrespective of distance of the object from the mirror
Which of the following force(s) is/are both attractive and repulsive?
1) Gravitation Force
2) Electromagnetic force
3) Strong interaction force
3 only
Which of these is INCORRECT about the force of Gravitation?
It cannot be shielded against.
It acts on particles having mass or even massless particles.
It always attracts and never repels.
None of the above
